Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Brigham Young University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 9781 - 9810 of 10983

Full-Text Articles in Entire DC Network

Temperature And Salinity Relationships Of The Nevadan Relict Dace, Steven Vigg Dec 1982

Temperature And Salinity Relationships Of The Nevadan Relict Dace, Steven Vigg

Great Basin Naturalist

The relict dace, Relictus solitarius, represents the only genus and species of fish native to Ruby Butte, Goshute, and Steptoe valleys in northeastern Nevada. In their natural habitats temperature ranges 0–25 C and salinity 175–1,158 mg/liter. The upper median thermal tolerance limit (96-hr TL50) of Butte Valley relict dace was 30.6 C when acclimated at 18–20 C. Relict dace tolerated total dissolved solids (TDS) of 11,043 mg/liter with no mortality during 96-hr exposures, but experienced 100 percent mortality at concentrations of 15,759 mg/liter with a mean resistance time of 23 hours. Tolerance of relict dace to 30 C was lowered …

Go to article

Insular Biogeography Of Mammals In The Great Salt Lake, Michael A. Bowers Dec 1982

Insular Biogeography Of Mammals In The Great Salt Lake, Michael A. Bowers

Great Basin Naturalist

The distribution of 21 species of nonvolant mammals among nine islands in the Great Salt Lake was analyzed for biogeographic patterns. The number of species inhabiting an island is closely correlated with island area That the slope of the regression line describing this relationship (z or b) is relatively shallow compared to (1) totally isolated island systems or (2) island systems where an equilibrium between rates of colonization and extinction have been attained suggests that isolation plays little role in accounting for the variation in mammalian species diversity among islands. Stepwise multiple regression confirms this, while demonstrating that area alone …

Go to article

Observations On Woundfin Spawning And Growth In An Outdoor Experimental Stream, Paul Greger, James E. Deacon Dec 1982

Observations On Woundfin Spawning And Growth In An Outdoor Experimental Stream, Paul Greger, James E. Deacon

Great Basin Naturalist

The response of woundfin to different substrates and current speeds was investigated in an outdoor experimental stream. Fish spawned in groups of 15–20 over 5–10 cm rock substrate in a .06 to .09 m/sec current at a depth of 10 cm. Eggs were adhesive on the undersides of the rocks. Fish spawned under these conditions grew to approximately 55–60 mm TL in 5 months.

Go to article

Effects Of Defoliation On Reproduction Of A Toxic Range Plant, Zigadenus Paniculatus, V. J. Tepedino Dec 1982

Effects Of Defoliation On Reproduction Of A Toxic Range Plant, Zigadenus Paniculatus, V. J. Tepedino

Great Basin Naturalist

The effect of complete defoliation, prior to flower stalk appearance, on the reproductive success of foothill deathcamas, a toxic range plant, was studied in northern Utah. Defoliated plants did not replace their leaves. Defoliation had no effect on total number of flower stalks produced but did significantly slow the rate of stalk emergence and reduce the number of plants that produced open flowers. The number of leaves produced by control plants was also positively associated with the probability of producing a flowering stalk. Few plants in either defoliated or control treatments set seed, probably because of inactivity of pollinators during …

Go to article

Front Matter, Vol. 42 No. 4 Dec 1982

Front Matter, Vol. 42 No. 4

Great Basin Naturalist

No abstract provided.

Go to article

Dorsal Hair Length And Coat Color In Abert's Squirrel (Sciurus Aberti), Denis C. Hancock Jr., Donald J. Nash Dec 1982

Dorsal Hair Length And Coat Color In Abert's Squirrel (Sciurus Aberti), Denis C. Hancock Jr., Donald J. Nash

Great Basin Naturalist

Sciurus aberti, like many other sciurids including Sciurus vulgaris and Sciurus carolinensis, shows a coat color polymorphism. Like Sciurus vulgaris, Sciurus aberti shows a correlation between coat color phase and dorsal hair length. Both squirrels show an increased frequency of dark morphs in the northern portions of their respective ranges.

Go to article

Distribution And Relative Abundance Of Fish In Ruth Reservoir, California, In Relation To Environmental Variables, Steven Vigg, Thomas J. Hassler Dec 1982

Distribution And Relative Abundance Of Fish In Ruth Reservoir, California, In Relation To Environmental Variables, Steven Vigg, Thomas J. Hassler

Great Basin Naturalist

The fish population of Ruth Reservoir, California, was sampled every two weeks with variable mesh gill nets from May 1974 through May 1975. Fish were captured in the following order of numerical abundance: Humboldt sucker (Catostomus humboldtianus), golden shiner (Notemigonus crysoleucus), brown bullhead (Ictalurus nebulosus), white catfish (I. catus), rainbow trout (Salmo gairdneri), and largemouth bass (Micropterus salmoides). The three most abundant species made up about 95 percent of total numbers and weight. All species exhibited a similar cyclic temporal availability pattern: catch rates increased to a maximum …

Go to article

Amcap Journal Volume 8 Issue 4 1982, Issues In Religion And Psychotherapy Oct 1982

Amcap Journal Volume 8 Issue 4 1982, Issues In Religion And Psychotherapy

Issues in Religion and Psychotherapy

No abstract provided.

Go to article

How Realistic Is The Goal Of Preventing Problems Associated With Teenage Sexual Activity?, Terrance D. Olson Oct 1982

How Realistic Is The Goal Of Preventing Problems Associated With Teenage Sexual Activity?, Terrance D. Olson

Issues in Religion and Psychotherapy

Testimony to the United States Senate Labor, Health and Human Services, Education Appropriations Subcomittee, May 5 1982.

Go to article

The Transformations Of Love, Edward L. Hart Oct 1982

The Transformations Of Love, Edward L. Hart

BYU Studies

No abstract provided.

Go to article

Toward An Understanding Of The Heart -- A Scriptural And Psychological Perspective, Paul F. Cook Oct 1982

Toward An Understanding Of The Heart -- A Scriptural And Psychological Perspective, Paul F. Cook

Issues in Religion and Psychotherapy

The word heart was used by the Hebrews and Greeks as an equivalent of our modern words of mind, emotion, will and personality. The Lord who revealed his ideas about the heart anciently has continued to use this word in modern revelations, thus raising the possibility that it is still useful to us. This paper defines heart, examines seven ways a treasure is established in the heart, and draws implications for a theory of personality and psychotherapy. Recommendations for research are also included.
(Presented at the AMCAP Convention 1 October 1982.)

Go to article

Human Intimacy: Further Considerations, Victor L. Brown Jr. Oct 1982

Human Intimacy: Further Considerations, Victor L. Brown Jr.

Issues in Religion and Psychotherapy

Presented at the AMCAP Convention 2 April, 1982.

Go to article

Ecomorphology And Habitat Utilization Of Echinocereus Engelmannii And E. Triglochidiatus (Cactaceae) In Southeastern California, Richard I. Yeaton Sep 1982

Ecomorphology And Habitat Utilization Of Echinocereus Engelmannii And E. Triglochidiatus (Cactaceae) In Southeastern California, Richard I. Yeaton

Great Basin Naturalist

The relationship between form and habitat utilization of Echinocereus engelmannii and E. triglochidiatus was studied in southeastern California. The major difference in form is in the density of stems comprising the canopy. These differences in morphology create differences in the daily heat loads of each species. Echinocereus triglochidiatus, with its stems densely packed and in contact with each other over much of their lengths, continues to gain heat internally as the sun sets due to conductance between the stems. In contrast E. engelmannii, with a more open canopy, begins to lose heat as the sun goes down. As a result, …

Go to article

Species-Habitat Relationships In An Oregon Cold Desert Lizard Community, David F. Werschkul Sep 1982

Species-Habitat Relationships In An Oregon Cold Desert Lizard Community, David F. Werschkul

Great Basin Naturalist

The abundance and diversity of lizards in nine habitat types from Oregon were studied from May through October 1980. Eight species were from eight habitat types. The most common species were Sceloporous occidentalis, Uta stansburiana, Sceloporous graciosus, and Cnemidophorus tigris. Phynosoma douglassi was uncommon and Eumeces skiltonianus was not observed. Temporary streams in nonbasaltic areas were the most productive habitat in terms of lizard abundance but sagebrush areas were the most productive habitat in terms of species diversity. No lizards were recorded from grassland conversion areas. The conflict between a land management policy that emphasizes both vegetation conversion and conservation …

Go to article

Front Matter, Vol. 42 No. 3 Sep 1982

Front Matter, Vol. 42 No. 3

Great Basin Naturalist

No abstract provided.

Go to article

End Matter, Vol. 42 No. 3 Sep 1982

End Matter, Vol. 42 No. 3

Great Basin Naturalist

No abstract provided.

Go to article

Buccal Floor Of Reptiles, A Summary, Wilmer W. Tanner, David F. Avery Sep 1982

Buccal Floor Of Reptiles, A Summary, Wilmer W. Tanner, David F. Avery

Great Basin Naturalist

A general survey of the information presently available on the osteology and myology of the hyobranchial apparatus. Included in the survey are examples of the hyobranchial skeleton of the major groups of reptiles, including the Chelonia, Crocodilia, Rhynchocephalia, and Squamata. The myology treats the muscles directly associated with the hyoid as well as those associated with the functioning of the apparatus, but not arising or inserted directly on or from the hyoid. The innervation of the hyobranchial apparatus is reviewed and briefly discussed based on the information available in a few major studies. An attempt is made to cite all …

Go to article

Nest Site Selection In Raptor Communities Of The Eastern Great Basin Desert, Dwight G. Smith, Joseph R. Murphy Sep 1982

Nest Site Selection In Raptor Communities Of The Eastern Great Basin Desert, Dwight G. Smith, Joseph R. Murphy

Great Basin Naturalist

Measures of niche breadth and overlap were used to compare nest site selection in a community of 10 raptor species and the Raven nesting in the eastern Great Basin Desert. Three variables were examined: nest site type, elevation, and exposure. Results suggest a division of component raptor species into relatively abundant core species that show wide niche breadths and uncommon fringe species with narrow niche breadths. Differences in use of each resource are most pronounced along elevation gradient in which three guilds are evident that correspond to raptor species groupings that nest at higher, middle, and lower elevations. Each guild …

Go to article

Phalacropsis Dispar (Coleoptera: Phalacridae), An Element In The Natural Control Of Native Pine Stem Rust Fungi In The Western United States, David L. Nelson Sep 1982

Phalacropsis Dispar (Coleoptera: Phalacridae), An Element In The Natural Control Of Native Pine Stem Rust Fungi In The Western United States, David L. Nelson

Great Basin Naturalist

Larvae of the phalacrid beetle Phalacropsis dispar (LeConte) consumed aeciospores and the underlying sporogenous mycelium, thereby destroying the aecia of all native western pine stem rust fungi studied. Aecia of the introduced white pine blister rust fungus (Cronartium ribicola) were not found to be infested by the beetle. A close, if not obligate, biosis of the beetle apparently exists with the native rust fungi, and their geographic distributions closely coincide. Laboratory tests and field observations indicate that the beetle completes its life cycle in 30 to 40 days and apparently overwinters as an adult. Quantitative data on aeciospore …

Go to article

First Specimen Of The Spotted Bat (Euderma Maculatum) From Colorado, Robert B. Finley Jr., James Creasy Sep 1982

First Specimen Of The Spotted Bat (Euderma Maculatum) From Colorado, Robert B. Finley Jr., James Creasy

Great Basin Naturalist

A spotted bat (Euderma maculatum) was picked up at the headquarters of Browns Park National Wildlife Refuge, Moffat County, Colorado, on 29 August 1981.

Go to article

Status Of Introduced Fishes In Certain Spring Systems In Southern Nevada, Walter R. Courtenay Jr., James E. Deacon Sep 1982

Status Of Introduced Fishes In Certain Spring Systems In Southern Nevada, Walter R. Courtenay Jr., James E. Deacon

Great Basin Naturalist

We record eight species of exotic fishes as established, reproducing populations in certain springs in Clark, Lincoln, and Nye counties, Nevada. These include an unidentified species of Hypostomus, Cyprinus carpio, Poecilia mexicana, Poecilia reticulata, a Xiphophorus hybrid, and Cichlasoma nigrofasciatum. Tilapia mariae, established in a spring near the Overton Arm of Lake Mead, and Tilapia zilli, established in a golf course pond in Pahrump Valley, are recorded for the first time from Nevada waters. Though populations of transplanted Gambusia affinis persist, other populations of Poecilia latipinna are apparently no longer extant. Cichlasoma severum, Notemigonus crysoleucas, Poecilia latipinna, and Carassius auratus …

Go to article

Invertebrate Faunas And Zoogeographic Significance Of Lava Tube Caves Of Arizona And New Mexico, Stewart B. Peck Sep 1982

Invertebrate Faunas And Zoogeographic Significance Of Lava Tube Caves Of Arizona And New Mexico, Stewart B. Peck

Great Basin Naturalist

A field survey in caves near Grants, New Mexico, and Flagstaff, Arizona, found only an exceptionally poor fauna of 14 species with no strong patterns of cave restriction. The faunal poverty is judged to be correlated with and influenced by the similarly impoverished boreal forests in nearby mountains. Species of flightless arthropods, suitable for cave colonization and restricted to cool-moist litter of boreal (Hudsonian-Canadian Life Zone) forests, are apparently not now present in suitable, nearby mountain habitats. They may not have dispersed to all available montane sites from the Southern Rocky Mountains during glacial conditions. Either the forests did not …

Go to article

A Retreat From Hypersexuality: The De-Emphasis Of Overt Sexuality In Homosexual Change Therapy, Richard H. Anderson Jul 1982

A Retreat From Hypersexuality: The De-Emphasis Of Overt Sexuality In Homosexual Change Therapy, Richard H. Anderson

Issues in Religion and Psychotherapy

No abstract provided.

Go to article

Temperature-Related Behavior Of Some Migrant Birds In The Desert, George T. Austin, J. Scott Miller Jun 1982

Temperature-Related Behavior Of Some Migrant Birds In The Desert, George T. Austin, J. Scott Miller

Great Basin Naturalist

Behavior of migrant birds in relation to temperature was studied and compared to that of resident species in the northern Mojave Desert. Migrants reduced foraging intensity above 30 C, but resident species showed no striking decrease in intensity of foraging at temperatures up to 35 C. Migrant species shifted activities to shaded microhabitats at temperatures between 20 and 30 C; the resident Verdin showed a similar shift at 35 C. Most migrants decreased the amount of time spent foraging at temperatures above 30; Verdins showed a similar but stronger response to temperatures about 30 C. Significant reductions in the use …

Go to article

Front Matter, Vol. 42 No. 2 Jun 1982

Front Matter, Vol. 42 No. 2

Great Basin Naturalist

No abstract provided.

Go to article

A New Species Of Cryptantha (Boraginaceae) From Nevada, Kaye H. Thorne, Larry C. Higgins Jun 1982

A New Species Of Cryptantha (Boraginaceae) From Nevada, Kaye H. Thorne, Larry C. Higgins

Great Basin Naturalist

Described as new is Cryptantha welshii Thorne & Higgins from the White River Valley of Nye County, Nevada.

Go to article

Vegetation Of The Mima Mounds Of Kalsow Prairie, Iowa, Jack D. Brotherson Jun 1982

Vegetation Of The Mima Mounds Of Kalsow Prairie, Iowa, Jack D. Brotherson

Great Basin Naturalist

One hundred and twenty-eight mima mounds were studied relative to their vegetational relationships in a tall grass prairie area of central Iowa. Mound origins are thought to be due to several phenomena but are most likely initiated and maintained by the activity of pocket gophers. Seventy-five percent of the plant species common to the mounds are prairie species. When vegetative composition of the mounds was compared to the adjacent prairie vegetation, however, they were only 35 percent similar. The mounds were shown to alter the original structure and composition of the prairie vegetation. The mounds, once formed, created a new …

Go to article

Occurrence And Effect Of Chrysomyxa Pirolata Cone Rust On Picea Pungens In Utah, David L. Nelson, Richard G. Krebill Jun 1982

Occurrence And Effect Of Chrysomyxa Pirolata Cone Rust On Picea Pungens In Utah, David L. Nelson, Richard G. Krebill

Great Basin Naturalist

In a rare 1969 epidemic, spruce cone rust caused by Chrysomyxa pirolata infected 40–100 percent of trees and 20–67 percent of cones on riparian Colorado blue spruce on plots located in a 2200–2400 m elevational zone in Huntington Canyon of central Utah. Uredinial and telial sporulation on Pyrola spp. began in mid-June, a time closely correlated with opening of pistillate spruce cones. Come phenology and host habitat, as influenced by elevation, are apparently important factors in the restricted niche of the cone rust fungus in Utah. Several preceding consecutive years with extended periods of spring and fall moisture were associated …

Go to article

Algal Populations In Bottle Hollow Reservoir, Duchesne County, Utah, Jeffrey Johansen, Samuel R. Rushforth, Irena Kaczmarska Jun 1982

Algal Populations In Bottle Hollow Reservoir, Duchesne County, Utah, Jeffrey Johansen, Samuel R. Rushforth, Irena Kaczmarska

Great Basin Naturalist

Bottle Hollow Reservoir contains a diverse algal flora. A total of 289 taxa was observed, 227 of which were diatoms. Both littoral and planktonic communities had high diatom diversity. During summer months filamentous Chlorophyta were diverse and high in biomass in the littoral zone. Phytoplankton collections in Bottle Hollow Reservoir were dominated by four species: Asterionella formosa, Cyclotella comta, Dinobryon divergens, and Fragilaria crotonensis. Plankton samples contained mostly small diatoms in early spring, with larger algae succeeding these as the summer progressed. No blue-green algae were important in this succession. Two peak production periods were observed, one in the fall …

Go to article

End Matter, Vol. 42 No. 2 Jun 1982

End Matter, Vol. 42 No. 2

Great Basin Naturalist

No abstract provided.

Go to article

First Prev Next Last